5577397987 has 4 divisors (see below), whose sum is σ = 6374169136. Its totient is φ = 4780626840.

The previous prime is 5577397979. The next prime is 5577398003. The reversal of 5577397987 is 7897937755.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7897937755 = 5 ⋅1579587551.

It is a cyclic number.

It is not a de Polignac number, because 5577397987 - 2³ = 5577397979 is a prime.

It is a super-2 number, since 2×5577397987² = 62214736610783304338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5577397907) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 398385564 + ... + 398385577.

It is an arithmetic number, because the mean of its divisors is an integer number (1593542284).

Almost surely, 2^5577397987 is an apocalyptic number.

5577397987 is a deficient number, since it is larger than the sum of its proper divisors (796771149).

5577397987 is an equidigital number, since it uses as much as digits as its factorization.

5577397987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 796771148.

The product of its digits is 116688600, while the sum is 67.

The square root of 5577397987 is about 74681.9789976136. The cubic root of 5577397987 is about 1773.4156847117.

The spelling of 5577397987 in words is "five billion, five hundred seventy-seven million, three hundred ninety-seven thousand, nine hundred eighty-seven".